1/*
 2 *  arch/s390/kernel/cpcmd.h
 3 *
 4 *  S390 version
 5 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
 6 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
 7 *               Christian Borntraeger (cborntra@de.ibm.com),
 8 */
 9
10#ifndef _ASM_S390_CPCMD_H
11#define _ASM_S390_CPCMD_H
12
13/*
14 * the lowlevel function for cpcmd
15 * the caller of __cpcmd has to ensure that the response buffer is below 2 GB
16 */
17extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
18
19/*
20 * cpcmd is the in-kernel interface for issuing CP commands
21 *
22 * cmd:		null-terminated command string, max 240 characters
23 * response:	response buffer for VM's textual response
24 * rlen:	size of the response buffer, cpcmd will not exceed this size
25 *		but will cap the output, if its too large. Everything that
26 *		did not fit into the buffer will be silently dropped
27 * response_code: return pointer for VM's error code
28 * return value: the size of the response. The caller can check if the buffer
29 *		was large enough by comparing the return value and rlen
30 * NOTE: If the response buffer is not below 2 GB, cpcmd can sleep
31 */
32extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
33
34#endif /* _ASM_S390_CPCMD_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 
 
 3 *  S390 version
 4 *    Copyright IBM Corp. 1999
 5 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
 6 *               Christian Borntraeger (cborntra@de.ibm.com),
 7 */
 8
 9#ifndef _ASM_S390_CPCMD_H
10#define _ASM_S390_CPCMD_H
11
12/*
13 * the lowlevel function for cpcmd
 
14 */
15int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
16
17/*
18 * cpcmd is the in-kernel interface for issuing CP commands
19 *
20 * cmd:		null-terminated command string, max 240 characters
21 * response:	response buffer for VM's textual response
22 * rlen:	size of the response buffer, cpcmd will not exceed this size
23 *		but will cap the output, if its too large. Everything that
24 *		did not fit into the buffer will be silently dropped
25 * response_code: return pointer for VM's error code
26 * return value: the size of the response. The caller can check if the buffer
27 *		was large enough by comparing the return value and rlen
28 * NOTE: If the response buffer is not in real storage, cpcmd can sleep
29 */
30int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
31
32#endif /* _ASM_S390_CPCMD_H */